MySQL 错误代码 1005/errno : 150

Question

我使用 XAMPP 5.6.19-0 作为 MySQL 数据库服务器并通过 MySQL Workbench (Mac OS 10.11.3) 进行管理。我正在尝试使用外键创建一些表，但出现此错误:

Error Code: 1005. Can't create table imobiliaria24h.proprietario (errno: 150 "Foreign key constraint is incorrectly formed")

这是我尝试使用的代码:

CREATE TABLE IF NOT EXISTS PROPRIETARIO (
NOME VARCHAR(30) NOT NULL,
CPF INT NOT NULL,
TELEFONE INT NOT NULL,
CORRETOR_CPF INT NOT NULL,
PRIMARY KEY (CPF),
FOREIGN KEY (CORRETOR_CPF) REFERENCES CORRETOR(CPF)
)ENGINE=InnoDB;

CREATE TABLE IF NOT EXISTS IMOVEL(
ENDERECO VARCHAR(100) NOT NULL,
TIPO ENUM('ALUGUEL', 'VENDA'),
INQUILINO_CPF INT,
PROPRIETARIO_CPF INT,
VALOR_ALUGUEL_PRECOVENDA INT NOT NULL,
NUM_QUARTOS INT NOT NULL,
METRAGEM INT NOT NULL,
NUM_BANHEIROS INT NOT NULL,
VALOR_CONDOMINIO INT NOT NULL,
IDADE INT NOT NULL,
HORA_REGISTRO TIME NOT NULL,
PRIMARY KEY(ENDERECO),
FOREIGN KEY (INQUILINO_CPF) REFERENCES INQUILINO(CPF),
FOREIGN KEY (PROPRIETARIO_CPF) REFERENCES PROPRIETARIO(CPF) 
)ENGINE=InnoDB;

CREATE TABLE IF NOT EXISTS INQUILINO(
NOME VARCHAR(30) NOT NULL,
CPF INT NOT NULL,
TELEFONE INT NOT NULL,
FIADOR BOOLEAN NOT NULL,
INADIMPLENCIA INT NOT NULL,
CORRETOR_CPF INT NOT NULL,
PRIMARY KEY (CPF),
FOREIGN KEY (CORRETOR_CPF) REFERENCES CORRETOR(CPF)
)ENGINE=InnoDB;

CREATE TABLE IF NOT EXISTS CORRETOR(
NOME VARCHAR(30) NOT NULL,
CPF INT NOT NULL,
TELEFONE INT NOT NULL,
ANOS_CASA SMALLINT NOT NULL,
TRABALHA_FDS BOOLEAN NOT NULL,
TRABALHA_NOITE BOOLEAN NOT NULL,
PRIMARY KEY (CPF)
)ENGINE=InnoDB;

有趣的是，如果我单独创建表，则只有那些相互引用的表，例如，我首先创建了 PROPRIETARIO 和 CORRETOR，然后创建了 INQUILINO，最后创建了 IMOVEL，这样一切都可以正常进行。我不明白为什么我会在“单个命令”中一起创建它们时遇到错误。

Answer 1

您正在运行那个确切的脚本吗？如果是这样，那么您似乎在实际创建外键引用的表之前尝试创建外键。

尝试更改构建它们的顺序。

CREATE TABLE IF NOT EXISTS CORRETOR(
NOME VARCHAR(30) NOT NULL,
CPF INT NOT NULL,
TELEFONE INT NOT NULL,
ANOS_CASA SMALLINT NOT NULL,
TRABALHA_FDS BOOLEAN NOT NULL,
TRABALHA_NOITE BOOLEAN NOT NULL,
PRIMARY KEY (CPF)
)ENGINE=InnoDB;

CREATE TABLE IF NOT EXISTS PROPRIETARIO (
NOME VARCHAR(30) NOT NULL,
CPF INT NOT NULL,
TELEFONE INT NOT NULL,
CORRETOR_CPF INT NOT NULL,
PRIMARY KEY (CPF),
FOREIGN KEY (CORRETOR_CPF) REFERENCES CORRETOR(CPF)
)ENGINE=InnoDB;

CREATE TABLE IF NOT EXISTS INQUILINO(
NOME VARCHAR(30) NOT NULL,
CPF INT NOT NULL,
TELEFONE INT NOT NULL,
FIADOR BOOLEAN NOT NULL,
INADIMPLENCIA INT NOT NULL,
CORRETOR_CPF INT NOT NULL,
PRIMARY KEY (CPF),
FOREIGN KEY (CORRETOR_CPF) REFERENCES CORRETOR(CPF)
)ENGINE=InnoDB;

CREATE TABLE IF NOT EXISTS IMOVEL(
ENDERECO VARCHAR(100) NOT NULL,
TIPO ENUM('ALUGUEL', 'VENDA'),
INQUILINO_CPF INT,
PROPRIETARIO_CPF INT,
VALOR_ALUGUEL_PRECOVENDA INT NOT NULL,
NUM_QUARTOS INT NOT NULL,
METRAGEM INT NOT NULL,
NUM_BANHEIROS INT NOT NULL,
VALOR_CONDOMINIO INT NOT NULL,
IDADE INT NOT NULL,
HORA_REGISTRO TIME NOT NULL,
PRIMARY KEY(ENDERECO),
FOREIGN KEY (INQUILINO_CPF) REFERENCES INQUILINO(CPF),
FOREIGN KEY (PROPRIETARIO_CPF) REFERENCES PROPRIETARIO(CPF) 
)ENGINE=InnoDB;